The difference between thyroid tumor and thyroid cancer is mainly in the following points: 1. From the scope of the disease, thyroid tumor includes benign tumors of the thyroid gland, such as thyroid adenoma and malignant tumor of the thyroid gland, which is thyroid cancer, while thyroid cancer only refers to malignant tumors of the thyroid gland. 2. From the treatment method, the only way to cure thyroid cancer is through radical thyroid cancer resection and postoperative chemotherapy. The only way to cure thyroid cancer is through radical thyroid cancer resection and post-operative chemotherapy. For benign thyroid tumors, close observation and regular follow-up are possible when the tumor is small, but surgery is required for tumors larger than 3 cm in diameter or suspected malignancy. 3.